An improved optical scheme for self-mixing low-coherence flowmeters

Luca Di Cecilia; Luigi Rovati; Stefano Cattini

doi:10.1117/12.2250551

17 February 2017 An improved optical scheme for self-mixing low-coherence flowmeters

Luca Di Cecilia, Luigi Rovati, Stefano Cattini

Proceedings Volume 10072, Optical Diagnostics and Sensing XVII: Toward Point-of-Care Diagnostics; 1007215 (2017) https://doi.org/10.1117/12.2250551
Event: SPIE BiOS, 2017, San Francisco, California, United States

Abstract

In this paper we present a fiber-based low-coherence self-mixing interferometer exploiting a single-arm approach to measure the flow in a pipe. The main advantages of the proposed system are the flexibility offered by fiber-connected optical head, a greater ease of alignment, the rejection of “common-mode” vibrations, and greater stability. Thanks to the use of a low-coherence source, the proposed system investigates the velocity of the scattering particles owing only in a fixed and well defined region located close to the duct wall itself. The reported experimental results demonstrate that in laminar flow regime the developed system is able to determine the flow and it is quite robust to variation in the scatterers concentration. Increasing the scatterers concentration of about 24 times, the sensitivity S has reduced of less than 30%.

Citation Download Citation

Luca Di Cecilia, Luigi Rovati, and Stefano Cattini "An improved optical scheme for self-mixing low-coherence flowmeters", Proc. SPIE 10072, Optical Diagnostics and Sensing XVII: Toward Point-of-Care Diagnostics, 1007215 (17 February 2017); https://doi.org/10.1117/12.2250551

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available